Role of Matrix Metalloproteinase-9 in Ex Vivo Expansion of Human Limbal Epithelial Cells Cultured on Human Amniotic Membrane

2005 ◽  
Vol 46 (3) ◽  
pp. 808 ◽  
Author(s):  
Chi-Chin Sun ◽  
Ching-Yi Cheng ◽  
Chin-Sung Chien ◽  
Jong-Hwei Su Pang ◽  
Wan-Chen Ku ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Matrix Metalloproteinase ◽  
Amniotic Membrane ◽  
Ex Vivo ◽  
Ex Vivo Expansion ◽  
Matrix Metalloproteinase 9 ◽  
Human Amniotic Membrane ◽  
Metalloproteinase 9 ◽  
Cells Cultured

Growth Factor Changes in Ex Vivo Expansion of Human Limbal Epithelial Cells on Human Amniotic Membrane

Cornea ◽  
2002 ◽  
Vol 21 (1) ◽  
pp. 101-105 ◽  
Author(s):  
Hin-Fai Yam ◽  
Chi-Pui Pang ◽  
Dorothy Shu-Ping Fan ◽  
Bao-Jian Fan ◽  
Edward Yau-Woon Yu ◽  
...  
Keyword(s):  
Growth Factor ◽  
Epithelial Cells ◽  
Amniotic Membrane ◽  
Ex Vivo ◽  
Ex Vivo Expansion ◽  
Human Amniotic Membrane

The role of matrix metalloproteinase 9 and its inhibitors in scarring processes following surgery for primary open-angle glaucoma

2019 ◽  
pp. 72-80
Author(s):  
Е.В. Маркелова ◽  
О.В. Овчинникова ◽  
А.С. Хохлова ◽  
Л.П. Догадова ◽  
А.В. Костюшко ◽  
...  
Keyword(s):  
Matrix Metalloproteinase ◽  
Postoperative Period ◽  
Open Angle Glaucoma ◽  
Matrix Metalloproteinase 9 ◽  
Tissue Inhibitors Of Metalloproteinases ◽  
Open Angle ◽  
Tissue Inhibitors ◽  
Surgery Outcome ◽  
Metalloproteinase 9

Оперативное вмешательство - один из основных методов лечения глаукомы. Однако развитие избыточного рубцевания созданных путей оттока определяет результат хирургического лечения в отдаленные сроки. Процессы рубцевания на данный момент недостаточно изучены. Цель исследования - оценка роли матриксной металлопротеиназы-9, ее ингибиторов в процессах рубцевания у больных с первичной открытоугольной глаукомой после оперативного лечения. Методика. Для выявления возможных маркеров избыточного рубцевания методом твердофазного иммуноферментного анализа определяли содержание матриксных металлопротеиназ-9, тканевых ингибиторов металлопротеиназ 2 и -3 в слезной жидкости у 37 пациентов с активной стадией первичной остроугольной глаукомы в динамике послеоперационного периода. Средний возраст пациентов составил 52,8 лет. В зависимости от исхода оперативного вмешательства все пациенты были разделены на 2 группы - с благоприятным исходом (без избыточного рубцевания) и с неблагоприятным исходом (с избыточным рубцеванием) на месте сформированных дополнительных путей оттока внутриглазной жидкости в послеоперационном периоде. Группа контроля включала 20 человек в возрасте от 50 до 66 лет без сопутствующей офтальмологической и соматической патологии в стадии обострения. Результаты. В динамике показано изменение концентрации матриксной металлопротеиназы-9 и ее ингибиторов в послеоперационном периоде. Анализ данных свидетельствует об обратной зависимости уровня матриксной металлопротеиназы-9 и тканевых ингибиторов металлопротеиназы 2 и 3 типов с исходом операции - чем выше концентрация металлопротеиназы-9 и ниже концентрация тканевых ингибиторов металлопротеиназ 2, -3 в слезной жидкости, тем выше вероятность неблагоприятного исхода в виде рубцевания сформированных дополнительных путей оттока внутриглазной жидкости в послеоперационном периоде. Заключение. Мониторинг уровня металлопротеиназ и их тканевых ингибиторов после проведения хирургического лечения пациентов с первичной открытоугольной глаукомой позволяет прогнозировать раннее рубцевание, дает возможность разработки новых методов лечения как в раннем, так и в позднем послеоперационном периоде. Surgery is one of the major treatments for glaucoma; however excessive scarring of created outflow patways affects the long-term outcome. At the present time, scarring processes are not sufficiently studied. Aim. To evaluate the role of matrix metalloproteinase 9 and its inhibitors in scarring after surgical treatment of open-angle glaucoma. Methods. Concentrations of matrix metalloproteinase 9 and tissue inhibitors of metalloproteinases 2 and 3 were measured in tear fluid of 37 patients (mean age, 52.8) with active primary open-angle glaucoma in dynamics during the postoperative period to identify possible markers of excessive scarring. Based on the surgery outcome, all patients were divided into two groups, with a favorable outcome (without excessive scarring) and an unfavorable outcome (with excessive scarring) in the created additional outflow pathways for the intraocular fluid in the postoperative period. The control group included 20 subjects aged 50-66 without eye disease or somatic disease at exacerbation stage. Results. Analysis of changes in concentrations of matrix metalloproteinase 9 and its inhibitors in the postoperative period showed their inverse relationship with the surgery outcome. The higher was the metalloproteinase 9 level and the lower the level of tissue inhibitors of metalloproteinases 2 and 3 the higher was the probability of unfavorable outcome evident as excessive scarring of the formed additional pathways for tear fluid outflow in the postoperative period. Conclusion. Postoperative monitoring of metalloproteinases and their tissue inhibitors allows to predict early scarring and to develop new treatments both in early and late postoperative periods.

scholarly journals SKIP Downregulation Increases TGF-β1-Induced Matrix Metalloproteinase-9 Production in Transformed Keratinocytes

Scientifica ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Jelena Kocić ◽  
Victor Villar ◽  
Aleksandra Krstić ◽  
Juan F. Santibanez
Keyword(s):  
Matrix Metalloproteinase ◽  
Transforming Growth Factor Beta ◽  
Transforming Growth Factor ◽  
Regulatory Protein ◽  
Mek Inhibitor ◽  
Matrix Metalloproteinase 9 ◽  
Transformed Cells ◽  
Interacting Protein ◽  
Metalloproteinase 9

Transforming growth factor-beta (TGF-β1) is a potent inductor of matrix metalloproteinase-9 (MMP-9) in transformed cells. Recently, Ski-interacting protein (SKIP) has been described as a regulator of TGF-β1 signal transduction, but its role in the induction of cell malignance by TGF-β1 has not been fully elucidated so far. In the present study, we analyzed the role of SKIP on TGF-β1-induced MMP-9 production. Mouse transformed keratinocytes (PDV) were stably transfected with SKIP antisense construct. We observed that SKIP depletion provoked an enhancement in the expression of MMP-9 in response to TGF-β1 treatment. The downregulation of SKIP produced an enhancement in TGF-β1-activated ERK1,2 MAP kinase as well as increased transactivation of downstream Elk1 transcription factor. The increased MMP-9 production in response to TGF-β1 was dependent of MAPK activation as PD98059, an MEK inhibitor, reduced MMP-9 expression in SKIP antisense transfected cells. Thus, we propose SKIP as a regulatory protein in TGF-β1-induced MMP-9 expression acting by controlling ERK1,2 signaling in transformed cells.

Important role of the angiotensin II pathway in producing matrix metalloproteinase-9 in human thoracic aortic aneurysms

2013 ◽  
Vol 183 (1) ◽  
pp. 472-477 ◽  
Author(s):  
Ayako Nagasawa ◽  
Koichi Yoshimura ◽  
Ryo Suzuki ◽  
Akihito Mikamo ◽  
Osamu Yamashita ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Matrix Metalloproteinase ◽  
Matrix Metalloproteinase 9 ◽  
Aortic Aneurysms ◽  
Thoracic Aortic Aneurysms ◽  
Metalloproteinase 9

Role of annexin II in estrogen-induced macrophage matrix metalloproteinase-9 activity: The modulating effect of statins

2006 ◽  
Vol 189 (1) ◽  
pp. 76-82 ◽  
Author(s):  
Juliana Hwang ◽  
Howard N. Hodis ◽  
Tzung K. Hsiai ◽  
Liana Asatryan ◽  
Alex Sevanian
Keyword(s):  
Matrix Metalloproteinase ◽  
Matrix Metalloproteinase 9 ◽  
Annexin Ii ◽  
Metalloproteinase 9
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